Lathe



A. V. CARROLL.

LATHE.

APPLICATION FILED JAN. 28 192]- Pmmd Apr. 25, 1922.

To :aZZ whom it mag concern:

s rr

Be it known that I, ARTHUR V. CARROLL, a citizen of the United States, residing at Cincinnati, in thecounty of Hamilton and State, of Qhio, have invented certain new-and useful Improvements in Lathes, of which the following is a specification.

'tively largerj chuck and relatively, larger work members than heretofore. Anotherobject is to @provide a lathe frame substantially as above specified in which-the strength and rigidity of the frame is not interfered with,

and in which the usefulness ofthe lathe frameas a support and'guide for-the-tool carriage and tail-stock is not impaired or its standard 'dimensions departed from. My in-' vention. also comprises certain details of form combination and arrangement all of which will be fully set forth in the description of the accompanying drawings in Which:

Fig. 1 is a plan of a lathe embodying my improvements.

Fig. 2 is a transverse section through the frame on line 2-2 of Fig. 1.

Fig. 3 is a transverse section through the frame on line 33 of Fig. 1.

The accompanying drawings illustrate the preferred embodiment of my invention in which 14 represents the main frame or bed of a lathe upon which is rigidly mounted at one end a headstock iii-provided with a r0 tary spindle 16 adapted to receive any one of a variety of chucks or face plates 17 to support the work. j

The lathe bed is provided with one set of ways 20 and 21 which extend practically the full length of the lathe bed from about mid- 'way of the headstock to the opposite end ofv the lathe bed and are in position to support the lathe tool carriage. 22 from one end to the other of its lateral arms or guide bars 24, particularly when the carriage 22 1s relatively close to the headstock, where it is I liable to be most extensively positioned and employed. The arms 24 of the carriage are designed to afford a firm non-vibratory support for the carriage upon the lathe ways, and when the carriage approaches the headnarrrun v. cARRonL,

l Application filed January 28, ;1921. Se'riaI No. 440,755.

. curately faced section orcmciuua'rr, OHIO. I

" LAT i Specification of Letters l' 'atent. Patented Apr, i922 stock or the tail -stockrit is desirable that i said arms may passvalong' side of and out-f side of said head-stock or tail stock; so as to continue to afford alfirm support to the car riage and at the same timetopermitthe central portion of thefcarriageto closely approach thelheadstock or tailstockj V A pair of ways 26 and 27 :independentof theways 20 and 21am therefore providedon which the 'tailstock 30' is adjustable endwise,

and adaptejd to be"cla mped:to any adjusted pOSltl'OIl. Extensions 26'. and 27 ofthe ways 26 :and 27 arepreferably but not necessarily provided under the headstock to "form an acclampthe headstock. p 7 The ways 26 and 26 and v27 and 27 are not continuous, there'being a gap therein at 2.6. and 277 of greater or less length 'in front 'of'thexheadstock :and where the tailofathe bed on which to stock is less liable'to be required. Practically. coextensive withisaidgaps 264". and 27" '1' forming an integral portion ofthe lathe frame and with its upper faceconstituting .m the fways iis;an :apron or web of metal 32 the arc of a cylinder with the axis of lathe spindle as its axis.- Said web 32 serves to l compensate for the gap in the ways 26 and 27 and to preserve or even increase the strength, and rigidity of the lathe bed at that locality while at the same time locally increasing the distance'from the spindle axis to the bed and affording locally a capacity to employ and swing chucks and face plates,

and also work members of greater diameter than at other points along the lathe bed.

I am thus enabled without materially departing from the standard types and dimens sions of-lathe beds to. provide a lathe bed having continuous ways for the tool carriage and without materially abridging the useful-. ness' and range of adjustment ofthe tailstock to provide a section of the bed where work and holding-tools requiring a greater swing are capable of being employed and upon. j V V The mechanism herein illustrated and described is capable of considerable modification without departing from the principle of my invention. What I claim is 1 1. In a lathe a lathe bed having a-head stock rigidly mounted upon oneend thereof, a pair of ways continuous, from the head-. stock to the oppositeend of the lathe bed to serve as. guides for a lathe tool carriage, a

operated pair of ways to serve independently of the tool carriage ways as supports for a tailstock and terminating some distance from the headstock to provide a space intervening between the headstock and the terminus of the tailstock ways where the distance between the lathe spindle axis and adjacent portion of the lathe bed is greater than opposite the tailstock ways.

2. In a lathe a lathe bed having a headstock rigidly mounted upon one end thereof, a pair of ways continuous from the headopposite the tailstock ways and an apron formed integral with the lathe bed intermediate ofthe head stock and said tailstock ways to insure maximum strength of the lathe bed atsaid locality. s

3. In a lathe a lathe bed having a headstock rigidly mounted upon one end thereof, a pair of ways continuous from the headstock to the opposite end of the lathe bed to I serve as guides for a lathe tool carriage, a

pair of ways to serve independently of the toolcarriage ways as supports for a tail V stock and terminating some distance from the headstockto provide a spacellntervenlng between the headstock and the terminus of" the tailstock ways, where the distance between the lathe spindle axis and the adjacent portion ofthe lathe bed is greater than opposite'the tailstock ways, and means to per-' manently compensate for the ga'pin said tailstock ways and locally maintain the strength of the lathe bed at a maximum.

4:. In alathe, a lathe bed having a headstock rigidly mounted upon one end there of, a pair of-ways continuous from the headstock to the opposite end of the, lathe-bed to serve as guides for a lathe tool carriage, a

pair of ways in substantially the same horizontal plane'with said tool carriage'ways to r serve independently of the tool carriage Ways as supports for a tailstock and terminating some distance from the headstock to provide a spaceintervening between the headstock and terminus of the tailstock ways where the distance between the lathe.

spindle axisand adjacent portions of the lathe bed is greater than opposite the tail stock ways.

In testimony whereof I have aflixed my signature. V e

ARTHUR V. CARROLL. f 

